A model to predict the time weighted exposures to gamma radiation was developed for buildings constructed with structural steel having some contamination from 60Co.
Severa buildings throughout sixteen city blocks in downtown Taipe were built about ten years ago with this material.
These buildings were used for residential, business, and educationa purposes with radiation levels ranging from background to five hundred times background.
A comprehensive epidemiologic study by the National Yang Ming University Medica School in Taipei is underway to study the effects of this exposure to the building occupants.
An evaluation of external radiation exposure was performed using survey instrument and thermoluminescent dosimeters.
Exposure data from the survey instruments were used in a computer model developed to calculate cumulative radiation exposure estimates for the epidemiologic research.
While the survey instrument data provided radiation levels at a point in time, the thermoluminescent dosimeters were placed in fixed locations and on several volunteers for a period of one month to verify the modeling results.
The model itself is a mathematical algorithm that provides estimates with minimum and maximum range values by taking into account differences in the survey data between adults and children, variable occupancy patterns background radiation, and radioactive decay. (...)
Mots-clés Pascal : Dose rayonnement, Modèle mathématique, Informatique biomédicale, Cobalt, Bâtiment, Chantier construction, Acier, Radiocontamination, Facteur risque, Dosimètre thermoluminescent, Rayonnement gamma, Performance algorithme, Calcul erreur, Epidémiologie
Mots-clés Pascal anglais : Radiation dose, Mathematical model, Biomedical data processing, Cobalt, Buildings, Building site, Steel, Radioactive contamination, Risk factor, Thermoluminescent dosimeter, Gamma radiation, Algorithm performance, Error analysis, Epidemiology
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0188508
Code Inist : 002A08F05. Création : 21/05/1997.